Variable Timestep

cadff1

Good afternoon, colleagues.

I need to know the simulation time step at each numerical interaction in DualSPHysics v5.0.

Regards.

Alex

examples/others/SaveDt

cadff1

Thanks so much, Alex.

With best regards.

cadff1

Dear colleague,

Good morning.

After the simple implementation of the following lines in the XML file, I obtained Dt with high exponents (10^5), however, the simulation ran normally.

<savedt>

        <start value="0.01" comment="Initial time (def=0)" />

        <finish value="1" comment="End time (def=0, no limit)" />

        <interval value="0.005" comment="Time between output data (def=TimeOut)" />

        <fullinfo value="1" comment="Saves AceMax, ViscDtMax and VelMax (def=0)" />

        <alldt value="1" comment="Saves file with all dt values (def=0)" /

      </savedt>

The output was:

Do you have any idea what happened?

Thanks in advance.

Regards.

Asalih3d

https://forums.dual.sphysics.org/discussion/comment/4757#Comment_4757

Try opening the file in notepad and you will see it properly rendered. I suspect that Excel is automatically interpreting "." / ",", which is generating these large values.

Kind regards

cadff1

Dear colleague,

You had the reason.

Thanks so much.

Asalih3d

https://forums.dual.sphysics.org/discussion/comment/4761#Comment_4761

No worries, glad to hear it worked. I had the exact same issue a few years ago and @Alex gave me the same answer - I am happy to pay it forward! :-)

Kind regards

cadff1

Great!